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    <title>clCreateFromD3D10BufferKHR</title>
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    <div class="refentry">
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      <div class="titlepage"></div>
      <div xmlns="" class="refnamediv">
        <a xmlns="http://www.w3.org/1999/xhtml" id="clCreateFromD3D10BufferKHR"></a>
        <h1>clCreateFromD3D10BufferKHR</h1>
        <p>Creates an OpenCL buffer object from a Direct3D 10 buffer.</p>
      </div>
      <div class="refsynopsisdiv">
        <h2></h2>
        <div class="funcsynopsis">
          <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
            <tr valign="bottom">
              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                    <a class="link" href="abstractDataTypes.html" target="pagedisplay">cl_mem</a>
                    <strong class="fsfunc">clCreateFromD3D10BufferKHR</strong>
                (</code>
                <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="pagedisplay">cl_context</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">context</var>, </td>
              </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="enums.html#cl_mem_flags" target="pagedisplay">cl_mem_flags</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">flags</var>, </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>ID3D10Buffer <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*resource</var>, </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">cl_int</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*errcode_ret</var>
                <code>)</code></td>
            </tr>
          </table>
        </div>
      </div>
      <div class="refsect1">
        <a id="parameters"></a>
        <h2>Parameters</h2>
        <div class="variablelist">
          <dl class="variablelist">
            <dt>
              <span class="term">
                <code class="varname">context</code>
              </span>
            </dt>
            <dd>
              <p>
                    A valid OpenCL context created from a Direct3D 10 device.
                </p>
            </dd>
            <dt>
              <span class="term">
                <code class="varname">flags</code>
              </span>
            </dt>
            <dd>
              <p>
                  A bit-field that is used to specify usage information. May be
                  <code class="constant">CL_MEM_READ_ONLY</code>, <code class="constant">CL_MEM_WRITE_ONLY</code>,
                  or <code class="constant">CL_MEM_READ_WRITE</code>. (See the table for
                  <a class="citerefentry" href="clCreateBuffer.html"><span class="citerefentry"><span class="refentrytitle">clCreateBuffer</span></span></a>
                  for more information.)
                </p>
            </dd>
            <dt>
              <span class="term">
                <code class="varname">resource</code>
              </span>
            </dt>
            <dd>
              <p>
                    A pointer to the Direct3D 10 buffer to share.
                </p>
            </dd>
            <dt>
              <span class="term">
                <code class="varname">errcode_ret</code>
              </span>
            </dt>
            <dd>
              <p>
                    An appropriate error code. If <code class="varname">errcode_ret</code> is NULL, no error code is returned.
                </p>
            </dd>
          </dl>
        </div>
      </div>
      <div class="refsect1">
        <a id="notes"></a>
        <h2>Notes</h2>
        <p>
          The size of the returned OpenCL buffer object is the same as the size
          of <code class="varname">resource</code>.  This call will increment the internal Direct3D
          reference count on <code class="varname">resource</code>. The internal Direct3D reference count
          on <code class="varname">resource</code> will be decremented when the OpenCL reference count
          on the returned OpenCL memory object drops to zero.
        </p>
        <p>
      General information about sharing memory objects with Direct3D 10 follows.
    </p>
        <p>
       The goal of this extension is to provide
      interoperability between OpenCL and Direct3D 10. This is designed to function
      analogously to the OpenGL interoperability. If this extension is supported
      by an implementation, the string "cl_khr_d3d10_sharing" will be present in the
      <code class="constant">CL_PLATFORM_EXTENSIONS</code> or <code class="constant">CL_DEVICE_EXTENSIONS</code>
      string described in the table of allowed values for <code class="varname">param_name</code> for
      <a class="citerefentry" href="clGetDeviceInfo.html"><span class="citerefentry"><span class="refentrytitle">clGetDeviceInfo</span></span></a>.
    </p>
        <p>
       As currently proposed, the interfaces for this
      extension would be provided in cl_d3d10.h.
    </p>
        <p>
       This section discusses OpenCL functions that allow
      applications to use Direct3D 10 resources as OpenCL memory objects. This allows efficient
      sharing of data between OpenCL and Direct3D 10. The OpenCL API may be used to execute
      kernels that read and/or write memory objects that are also Direct3D 10 resources. An
      OpenCL image object may be created from a Direct3D 10 texture resource. An OpenCL buffer
      object may be created from a Direct3D 10 buffer resource. OpenCL memory objects may be
      created from Direct3D 10 objects if and only if the OpenCL context has been created from
      a Direct3D 10 device.
    </p>
        <h4><a id="id-1.6.7"></a>Lifetime of Shared Objects</h4>
        <p>
       An OpenCL memory object created from a Direct3D
      10 resource remains valid as long as the corresponding Direct3D 10 resource has not been
      deleted. If the Direct3D 10 resource is deleted through the Direct3D 10 API, subsequent
      use of the OpenCL memory object will result in undefined behavior, including but not
      limited to possible OpenCL errors, data corruption, and program termination.
    </p>
        <p>
       The successful creation of a
      cl_context against a Direct3D 10 device specified via the context create parameter
      <code class="constant">CL_CONTEXT_D3D10_DEVICE_KHR</code> will increment the internal Direct3D
      reference count on the specified Direct3D 10 device. The internal Direct3D reference
      count on that Direct3D 10 device will be decremented when the OpenCL reference count on
      the returned OpenCL context drops to zero.
    </p>
        <p>
       The OpenCL context and corresponding command-queues
      are dependent on the existence of the Direct3D 10 device from which the OpenCL context
      was created. If the Direct3D 10 device is deleted through the Direct3D 10 API, subsequent
      use of the OpenCL context will result in undefined behavior, including but not limited
      to possible OpenCL errors, data corruption, and program termination.
    </p>
      </div>
      <div class="refsect1">
        <a id="errors"></a>
        <h2>Errors</h2>
        <p>
          Returns <span class="errorname">CL_SUCCESS</span> returns a valid non-zero OpenCL buffer
          object and <code class="varname">errcode_ret</code> is set to <span class="errorname">CL_SUCCESS</span>
          if the buffer object is created successfully. Otherwise, it returns a NULL value with
          one of the following error values returned in <code class="varname">errcode_ret</code>:
        </p>
        <div class="itemizedlist">
          <ul class="itemizedlist" style="list-style-type: disc; ">
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_CONTEXT</span> if <code class="varname">context</code> is not a valid context.
            </li>
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_VALUE</span> if values specified in <code class="varname">flags</code> are
                not valid.
            </li>
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_D3D10_RESOURCE_KHR</span> if <code class="varname">resource</code>
              is not a Direct3D 10 buffer resource, if <code class="varname">resource</code> was created with
              the <code class="constant">D3D10_USAGE</code> flag <code class="constant">D3D10_USAGE_IMMUTABLE</code>,
              if a <span class="type">cl_mem</span> from resource has already been created using
              <code class="function">clCreateFromD3D10BufferKHR</code>, or if <code class="varname">context</code>
              was not created against the same Direct3D 10 device from which
              <code class="varname">resource</code> was created.
            </li>
            <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_OUT_OF_HOST_MEMORY</span> if there is a failure to allocate
              resources required by the OpenCL implementation on the host.
            </li>
          </ul>
        </div>
      </div>
      <div class="refsect1">
        <a id="specification"></a>
        <h2>Specification</h2>
        <p><img src="pdficon_small1.gif" />
            <a href="http://www.khronos.org/registry/cl/specs/opencl-1.2-extensions.pdf#page=73" target="OpenCL Spec">OpenCL Specification</a>
        </p>
      </div>
      <div class="refsect1">
        <a id="seealso"></a>
        <h2>Also see</h2>
        <p>
            <a class="citerefentry" href="cl_khr_d3d10_sharing.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_d3d10_sharing</span></span></a>,
            <a class="citerefentry" href="clGetDeviceIDsFromD3D10KHR.html"><span class="citerefentry"><span class="refentrytitle">clGetDeviceIDsFromD3D10KHR</span></span></a>,
            <a class="citerefentry" href="clCreateFromD3D10Texture2DKHR.html"><span class="citerefentry"><span class="refentrytitle">clCreateFromD3D10Texture2DKHR</span></span></a>,
            <a class="citerefentry" href="clCreateFromD3D10Texture3DKHR.html"><span class="citerefentry"><span class="refentrytitle">clCreateFromD3D10Texture3DKHR</span></span></a>,
            <a class="citerefentry" href="clEnqueueAcquireD3D10ObjectsKHR.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueAcquireD3D10ObjectsKHR</span></span></a>,
            <a class="citerefentry" href="clEnqueueReleaseD3D10ObjectsKHR.html"><span class="citerefentry"><span class="refentrytitle">clEnqueueReleaseD3D10ObjectsKHR</span></span></a>
        </p>
      </div>
      <div xmlns="" class="refsect3" lang="en" xml:lang="en"><a xmlns="http://www.w3.org/1999/xhtml" id="Copyright"></a><h4 xmlns="http://www.w3.org/1999/xhtml"></h4><img xmlns="http://www.w3.org/1999/xhtml" src="KhronosLogo.jpg" /><p xmlns="http://www.w3.org/1999/xhtml"></p>Copyright © 2007-2011 The Khronos Group Inc.
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and/or associated documentation files (the
"Materials"), to deal in the Materials without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Materials, and to
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